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The F/FG series valve is the most economical way to protect outdoor pipelines and vessels from expensive freeze damage. A thermal actuator automatically opens the valve before the temperature of the fluid drops to the freezing point. By bleeding the fluid in the system only when the danger of a freeze-up exists, the valve delivers positive freeze protection with minimal waste. This intermittent operation provides substantial savings in water and sewer costs, making the F/FG series valve an ideal, economical replacement for systems with manually operated block valves that are opened seasonally. The F/FG series can also be used in most applications that involve automatic control of fluids, such as glycol, oil, light chemicals, etc.

Note: Specify temperature between 35° and 255°F in 5°F increments. Differential from full open to full closed is typically 10° to 15°F. Valve opens/closes gradually.

Unit of Measure

Specifications

NPT Thread Size

1/2 in

Valve Type

FG Series Automatic Freeze Protection and Fluid Temperature Control Valve

Port Size

1/2 in

Maximum Operating Pressure

150 psig

Flow Coefficient (Cv)

3.8

Valve Action

Direct

Body Material

Stainless Steel

Dimensional Drawing


F/FG Schematic Figure 3
Dimension A1 3-1/2 in
Dimension B2 7-5/16 in
Dimension C3 6-1/4 in

Net Weight

4-3/4 lb

The Ogontz Guarantee

We will repair or replace on a no-charge basis, FOB Willow Grove, PA, any valves or traps returned to us within 18 months, if found to be defective in material or workmanship.

Typical Applications

Air Scrubbers Condensate Returns Cooling Towers Exposed Water Lines - indoors or outdoors Fire Lines Safety Showers Ship Supply Lines Sprinkler Systems Tanks

Plug Material

PTFE Silicone
  • 1 ±1/8 in Tolerance
  • 2 ±1/8 in Tolerance
  • 3 ±1/8 in Tolerance